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Respiration

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by

Jonathan Butler

on 24 February 2014

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Transcript of Respiration

Respiration and Fermentation

Objectives
I will understand the difference between respiration and cellular respiration

I will gain an understanding of the events that occur during cellular respiration

I will be able to define and explain different types of fermentation





What is respiration?

Respiration is the process by which cells obtain energy from glucose.


During respiration, cells break down simple food molecules such as sugar and release the energy they obtain.
The cells of all living organisms carry out respiration.

During photosynthesis, plants capture the energy from sunlight and store it in the form of carbohydrates.

When cells need energy (ATP), they withdraw it by breaking down the carbohydrates by respiration.
Two Stages of Respiration
1. In the cytoplasm, glucose is broken down into smaller molecules oxygen is not involved. Only a small fraction of energy is released.
2. In the mitochondria, the smaller molecules combine with oxygen to produce water and carbon dioxide. This reaction releases a large amount of energy.
What is happening to our bodies?
When we breathe in, we take in oxygen for respiration.
When we breathe out, we release water and carbon dioxide.
The Respiration Equation
Fermentation
Fermentation provides energy for cells without using oxygen. There are two types.
Alcoholic fermentation occurs when yeast and some other single-celled organisms break down sugars. In this process of fermentation alcohol, carbon dioxide, and some energy is produced.
Alcoholic Fermentation
Lactic Acid Fermentation
This form of fermentation causes your legs to hurt when you are running. When you are not getting enough oxygen to your muscles, the cells use fermentation to get energy. As a result, lactic acid is produced.
Full transcript